<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>demo</title>
</head>

<body>
    <table border="1">
        <tr>
            <td>2</td>
            <td>2</td>
            <td>4</td>
            <td>4</td>
        </tr>
        <tr>
            <td>5</td>
            <td>7</td>
            <td>7</td>
            <td>9</td>
        </tr>
        <tr>
            <td>10</td>
            <td>10</td>
            <td>12</td>
            <td>12</td>
        </tr>
        <tr>
            <td>14</td>
            <td>14</td>
            <td>16</td>
            <td>16</td>
        </tr>
    </table>
</body>

</html>